Rotary reversible engine.



W.'RISLEY. ROTARY REVERSIBLE ENGINE.

APPLICATION FILED NOV. 3, 1903.

Patented Oct. 19, 1909.

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.W. RI SLEY. ROTARY REVERSIBLE ENGINE.

APPLICATION FILED NOV. s, 1902.

937,718.v Patented Oct. 19,1909.

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ROTARY REVERSIBLE ENGINE.

APPLIGATION FILED NOV. 2, 19011..

937,718., Patented 0ct.19,1909.

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W. RISLEY. ROTARY REVERSIBLE ENGINE.

APPLIOATION numnov. 3, 1908.

937,718. Patented Och 19,1909.

5 SHEETS-SHEET 4.

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UNITED STATES PATENT OFFICE.

WARD RISLEY, 0F JACKSBORO, TEXAS, ASSIGNOR, IBY DIRECT AND MESNE ASSIGN-MENTS, OF ONE-HALF TO ZEPH L. RISLEY, 01-? J ACKSBORO, TEXAS.

ROTARY REVERSIBLE ENGINE.

Specification of Letters Patent.

Patented Oct. 19-, 1909.

To all whom it may concern:

Be it known that I, WARD RIsLnY, a citizen of the United States,residing at J acksboro, in the county of Jack and State of Texas, haveinvented certain new and useful Improvements in Rotary ReversibleEngines; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

This invention relates to rotary engines, and has for its object theproduction of an engine which can be reversed at will, which will becertain and economical in action, which will be comparativelyinexpensive to build, and which is incapable when used in pairs ofstopping on a dead center.

With these and other objects in view the invention consists in thedetails of construction and combinations of parts more fully hereinafterdisclosed, and particularly pointed out in the claims.

Referring to the accompanying drawings forming a part of thisspecification in which like numerals refer to like parts in all theviews:Figure 1, is a cross-sectional view taken on the line 1-l of Fig.2, looking in the direction of the arrow. Fig. 2, is a 1011- gitudinalsectional View on the line 2-2 of Fig. 1. Fig. 3, is an end elevationalview of the engine looking in the direction of the arrow in Fig. 2, withcertain parts in sec-- tion. Fig. 4, is a view similar to Fig. 3, butlooking in the opposite direction and showing certain parts in section,and, Fig. 5, is a sectional detail view of the governor and itsconnecting parts.

1, represents the casting constituting the outer frame; 2, the mainshaft; 3, the eccentrically mounted piston rigid therewith; 4, thecylinder in which the said piston revolves; 5, a packing box for saidpiston; 6 and 7, abutments; 8 and 9, pivots for said abutments; 10, 11and 12, exhaust ports controlled respectively by the valves 13, 14 and15; 16, an intake valve for fluid under pressure; 17, a port passingtheret-hrough; 18,

a passage for said fluid around said intake 1 16, and 19 and 20, portsadmitting said fluid to the cylinder 4 of the engine. 21, is a reversingvalve, and 22, a throttling valve. 23 and 24, represent steam jackets,and 25 an exhaust pipe.

On the shaft 2, see Fig. 2, is a pinion 26, which engages an idler 27,on the short shaft 28, passing steam tight through the end plate 29 ofthe engine, to get a firm support, as shown. The idler 27 meshes withthe pinion 30, on the shaft 31, which also carries the gear 32, meshingwith the gear 33 on the rod 34, mounted on the bracket 35 supported onthe top of the engine, as shown. At the other end of the engine, the rod34 carries a bevel pinion 36, meshing with the pinion 37 on the hollowstud 38, carrying the disk 39, to which are pivoted the arms 40 of thecentrifugal governor 41. Since the details of this governor are not new,and since they are plainly shown and well understood, a furtherdescription thereof will be omitted. The reciprocating shaft 42 of thisgovernor is'provided with the two racks 43 and 44, as best shown in Fig.4, which are adapted to engage the mutilated gear 45 on the rotatingpipe 46, joined at' 47 to the 0scillating throttle valve 22, Fig. 2. Themain steam pipe 48 enters the pipe 46 and registers with the intake 16,as shown.

Secured to the pipe 46 is a strap 49, to which is attached a lever 50,provided with a pawl 51 engaging the ratchet teeth 52 carried by thesaid pipe.

On the shaft 2 (see Fig. 2) it is preferred to place a piston 60, set atany desired angle to the piston 3, and also to place on said shaft acylinder 61, and to provide abutments, exhaust ports and valves, each ofwhich are substantial duplicates of corresponding parts above described.In fact it is found in many cases desirable to place two or morecomplete engines on the same shaft, with their pistons set at suitableangles to each other; and in Fig. 2, I have shown two such duplicateengines so placed, both of which are controlled by the same governor 41,which is preferably provided with a cover 65.

66 represents a reversing lever for the engine seen to the left in Fig.2, which is pro: vided with a strap 67 encircling the shaft 2, with anarm 68 joined to the preferably spring arm 69 rigidly connected with thepivot stud 8 of the abutment 6, and with the arm 7 0 connected with thepreferably spring arm 71 rigidly connected with the pivot stud 9 of theabutment 7.

75 represents a reversing lever for the en gine seen to the right inFig. 2, which is likewise provided with a strap 76 encircling the shaft2, arms 77 and 78 connecting with the pivot of the left hand abutment82, as it would appear if shown in Fig. 1, and with arms 79 and 80connecting with the pivot of the other abutment 83 of said e11- gine,all as previously set forth in connection with the right hand engine.

In operation, steam, compressed air or other fluid is admitted throughthe pipe 48, whereupon it passes to the port 17 of the intake valve 16,thence through the passage 18, port 19 and to the cylinder 4, causingthe piston 3 to revolve until it uncovers the exhaust port 10, when thesteam or other fluid passes through the jacket 23, port 90, to theexhaust pipe 25.

As the shaft 2 revolves with the piston it turns the pinion 26, whichthrough the idler 27 turns the pinion 30, gears 32 and 33, and thegovernor rod 34. The pinion 30 turns the intake valve 16, through itsshaft connection 31, as shown, and thereby causes its port 17 to revolvewith the piston. With the relation of parts shown in Fig. 1, and thevalve 16 revolving in the direction of the arrow, the throttle valve 22is about to cut off the steam, and the steam is being used expansivelythrough an angle of a little over 180. V

As the engine speeds up the rod 34 will speed up the governor 41,causing its weights to fiy out and the rod 42 to descend. The rack 43 onsaid rod will thereupon descend and come into engagement with themutilated gear 45 on the pipe '46, which in turn through its engagement47 with the throttle valve 22 will cause the same to revolve in adirection against the hands of a watch, as

seen in Fig. 1, and to thereupon cut ofl the steam earlier in therevolution of the piston 3. This action will cause the engine to slowdown, and the governor rod 42 will thereupon rise, when the rack 43 willreverse the movement of the valve 22, and cause the period of expansionto be'decreased, which of course will again speed up the engine. Inother words, while the inlet port 17 is continuously revolving with thepiston, the throttle valve 22 will oscillate back and forth to governthe period of expansion, and thereby keep the engine at a constantspeed, notwithstanding the load may vary.

What has just been said of the left hand engine, shown in Fig. 2, ofcourse is true of the right hand engine, and a description of itsoperation is therefore unnecessary.

When it is desired'to reverse the engine, the right hand end of lever66, as seen in Fig. 3, is raised, which through the connections and 71will lower the abutment 7 and through the connections 68 and 69 will.

raise the abutment 6. At the same time the connections 95 and 96 betweensaid lever 66 valves 13 and 14 in this engine and not shown, areoperated in a manner whichwill presently appear. 7

Meshing with the pinion 106 on the shaft 2, is a gear 100 controllingthe valve 15, and which gear has a diameter twice as great as that ofsaid pinion 106. This valve 15,

extends from the left hand engine through the right hand engine, asshown in Fig. 2, V

and is provided with the two openings 102 and 103 at a suitable angle toeach other, as shown. through a little over 180, the parts are so timedthat the edge 104 of the opening 102 When the piston 3 has moved willbegin to register with the port 105, and

therefore steam will begin to exhaust through said ports 105 and-102,into the pipe 25. The object of providing this exhaust is to reduce theback pressure, and to exhaust to atmospheric pressure at the earliestpossi-.

ble moment.

The ports 102 and 105, extend over an angle of very nearly and thereforeupon reversing the engine it is necessary to allow. for this byproviding a lost motion of about 90. To do this I have'provided the cutaway place or slot 110 in the gear in.

which loosely plays the key 111 which se- 7 cures the said gear to thevalve 15, and thereby causes'the said valve to be not moved while thesaid gear is moving through the corresponding are. But upon the enginebeing reversed, the opposite end of the said slot will so act upon thesaid key as to properly time the valve andpiston. Since 7 i the saidvalve '15 extends through both engines, as above'stated, it'is' evidentthat, the

single gear 100 is sufficient to operate both' passages 102 and103 forthe respective engines; and in the same way the exhaust valves 13and'14are extended through both:

engines, and are each provided with duplicate openings and are operatedfor both engines by the slngle connections 95, 96, and

97 and 98, shown in Fig. 3. It is preferred to rigidly connect thereversing levers 66 and 75 in order to compel them to move together, andfor this purpose I have pro vided suitable bars 107 which rigidly jointhe same. 7

hen the abutments and exhaust valves 13 and 14 are operated forreversing the engines in the manner above described, the engine slowsdown owing to the back pressure in the cylinder; the racks 43 and 44rise out of engagement with the teeth 45 on reversing valve 21, by meansof the pipe 16, and the lever 50 is thrown over by hand to the right, asseen in Fig. 4, or to the left, as seen in Fig. 1, which causes thethrottling valve 22 to move through an arc of about 90 in a directionagainst the hands of a clock, as seen in Fig. 1. In the meantime theoperation of the lever 66 has through the arm 115, joined to the link116 pivoted at 117 to the head 29 of the engine, and through the pivotalconnection 118, moved the lug and collar 119 joined to the theconnections 120, as shown in Fig. 2. This movement, owing to the pivot117, will be in the reverse direction to that of the valve 22, or withthe hands of a watch, as seen in Fig. 1; and it will be just enough touncover the .ort 20, and of course it closes the port 19.

hen the steam is exhausted through the ports 10 or 11, into the jacket23 or 24:, its heat serves to aid in keeping up the temperature of thesteam in the cylinder 4 in the manner well known; but, owing to thecomparatively thin outer walls 125, and the extent of their outersurfaces, a considerable condensing action is going on at the outerportions of said steam and thereby lessening its back pressure, whileits inner walls tend to remain at a somewhat higher temperature.

The pistons are provided with a suitable spring pressed packing bar 127,located in the box 5, and at its ends with suitably spring pressedpacking rings 128, as best shown in Fig. 2. These rings 128 are providedwith the holes shown in Fig. 2 to accommodate the outwardly pressingsprings, and are preferably provided with notches, not shown, to fitcorresponding projections on the piston and thereby prevent their beingdisplaced.

On the head 29 of the engine there is provided a suitable rack 1410,into which a catch 1&1 engages and holds the reversing lever 66 in itsraised position.

It is notdesired to limit this invention to the exact details ofconstruction and combination of parts above set forth, except as ispointed out in the claims, for it is evident that changes may be readilymade by those skilled in the art without departing from the spirit ofthe invention.

Having now ascertained the nature of this invention and the mannerof'constructing and using the same, what is claimed is 1. In a rotaryengine, the combination of a cylinder; a rotating piston eccentricallymounted therein; an intake valve rotating with said piston; a throttlevalve concentric with said intake valve and adapted to govern saidintake valve; a governor; connections between said intake valve; andconnections between said governor and said governor and said throttlevalve, substantially as described.

2. In a rotary engine, the combination of a cylinder provided with anexhaust port; a

rotating piston eccentrically mounted therein; an abutment in saidcylinder adapted to contact with said piston; an intake valve rotatingwith said piston; a throttle valve concentric with said intake valve andadapted to govern said intake valve; a governor; and independentconnections between said intake and governor and said throttle valves,substantially as described.

3. In a rotary engine, the combination of a cylinder provided with anexhaust port and an exhaust valve controlling the same; a rotary-pistonin said cylinde; a rotating intake valve driven by said piston; athrottle valve; a governor; different connections between the intake andthrottle valves and the governor; and connections between said pistonand said exhaust valve; whereby said exhaust and intake valves arecompelled to revolve in a fixed relation with said piston, substantiallyas described.

4. In a rotary engine, the combination of a governor; a rotating pistoneccentrically mounted; an oscillating reversing valve; a continuouslyrotating intake valve concentric with said reversing valve; anoscillating throttle valve governing the intake valve; and independentconnections between sai governor and said intake and throttle valves,substantially as described.

5. In a rotary engine, the combination of a cylinder; a rotating pistoneccentrically mounted therein; an intake valve rotating with saidpiston; an oscillating reversing valve concentric with said intakevalve; a throttle valve concentric with said intake valve and adapted togovern said intake valve; a governor; connections between said governorand said throttle valve and other connections between said governor andsaid intake valve, substantially as described.

6. In a rotary engine, the combination of a cylinder provided with aplurality of exhaust ports and valves controlling the same; a rotatingpiston in said cylinder; connections between said piston and one of saidvalves; a rotating intake valve; a governor connected to the same;connections between said piston and said intake valve, whereby thelatter is compelled to revolve in a fixed relation'with said piston; anoscillating reversing valve concentric with said intake valve, athrottle valve; and connections be tween the same and said governor,substantially as described.

7. In a rotary engine, the combination of a cylinder provided with anexhaust port and a valve controlling the same; a piston in saidcylinder; a shaft on which said piston is eccentrically mounted; arotating intake valve; gear connections between said shaft and each ofsaid valves; a centrifugal governor; gear connections between saidintake valve and said governor; a throttle valve concentric with saidintake valve; and connections between the same and said governor,substantially as described.

8. In a rotary engine, the combination of a cylinder; steam jacketspartially surrounding the same; an exhaust passage between said cylinderand one of said jackets provided with a valve; a piston eccentricallymounted in said cylinder; a pivoted abutment in said cylinder adapted tocontact with said piston; a rotating intake valve; an oscillatingthrottling valve concentric with said intake valve; a governor;connections between said governor and said throttling valve, andconnections between said governor and said intake valve, substantiallyas described.

9. In a rotary engine, the combination of a cylinder; steam jacketspartially surrounding the same; an exhaust passage between said cylinderand each of said jackets provided with a valve; a piston eccentricallymounted in said cylinder; a pair of pivoted abutments in said cylinderadapted to contact with said piston; a rotating intake valve; anoscillating throttling valve concentric with said intake valve; areversing valve; means for operating the same; means for operating saidabutments; a governor; connections between said governor and saidthrottling valve, and connections between said governor and said intakevalve, substantially as described.

10. In a reversible rotary engine, the combination of a frame providedwith a plurality of steam jackets and a cylinder; a plurality of exhaustports between said cylinder and jackets; valves in said ports; aplurality of pivoted abutments in said cylinder; a reversing lever;connections between said lever and said abutments for raising andlowering said abutments; connections between said lever and said valvesfor operating the same; an eccentrically mounted rotating piston in saidcylinder; a rotating intake valve; an oscillating reversing valveconcentric with said intake valve; connections between the same and saidlever, a

throttle valve; a governor; and connections" between each of said intakeand throttle valves and said governor, substantially as described.

11. In a reversible rotary engine, the co1nbination of a frame providedwith a plurality of steam jackets and a cylinder; a plurality of exhaustports between said cylinder and jackets; valves in said ports; aplurality of pivoted abutments in said cylinder; a reversing lever;connections between said lever and said abutments for raising andlowering said abutments; connections between said lever and said valvesfor operating the same; an eccentrically mounted rotating piston in saidcylinder; a rotating inl l I l 1 l 1 take valve; an oscillating throttlevalve; a governor connected to said throttle valve; an oscillatingreversing valve; and connections between the same and said lever,substantially as described.

12. In a reversible rotary engine, the combination of a frame providedwith aplurality of steam jackets and a cylinder; a plurality of exhaustports between said cylinder and jackets; valves in rality of pivotedabutments in said cylinder; a reversing lever; connections between saidlever and said abutments for raising and lowering said abutments;connections between said lever and said valves for operating the same;an eccentrically mounted rotating piston in said cylinder; a shaft onwhich the same is mounted; a rotating intake valve; an oscillatingthrottle valve; a governor connected to said throttle valve; anoscillating reversing valve; connections between the same and saidlever; gears on said shaft for operating said intake valve and saidgovernor; and a lever 50 for op erating said reversing valveindependently of said governor, substantially as described.

13. In a reversible engine, the combination of a frame provided with aplurality of steam jackets; a cylinder; a plurality of exhaust portsbetween said cylinder and jack ets; an exhaust pipe; an exhaust port105, between said cylinder and said pipe; valves in each of said ports;a shaft passing through said cylinder; a piston eccentrically mounted onsaid shaft; packing bars for said piston; packing rings for said piston;abutments in said cylinder adapted to consaid ports; a plu tact withsaid piston one at a time; a reversing lever; connections between saidlever and said abutments for raising and lowering the same; connectionsbetween said lever and two of said valves for opening and closing thesame; an intake valve; gears on said shaft for causing said intake valveto rotate with said piston; gears also on said shaft for causing thevalve controlling the port to rotate with said piston; a throttle valve;a governor; gears on said shaft for operating said governor;connectionsbetween said governor and said throttle valve; a lever for operatingsaid throttle valve independently of said governor; a reversing valve;and connections between the same and said reversing lever, substantiallyas described.

14. In a rotary engine adapted to use steam expansively, the combinationof a govsaid intake valve at a predetermined pointin its revolution;independent connections between said governor and said intake andthrottle valves; and means for driving said intake valve in a fixedrelation to said piston, substantially as described.

15. In a rotary engine, the combination of a piston; a governorconnected therewith; a throttle valve; a pipe 4:6 connected to saidvalve; a mutilated gear 45 on said pipe; and a pair of racks controlledby said governor adapted to alternately engage said gear, substantiallyas described.

16. In a rotary engine, the combination of a piston; a governor operatedthereby; an intake valve; a throttle valve; an oscillating pipe adaptedto convey steam to said intake valve connected to said throttle valve;and connections between said pipe and said governor by which said pipeis oscillated,

substantially as described.

17. In a rotary engine, the combination of a piston; a governor operatedthereby; an intake valve; a throttle valve adapted to oscillatecencentrically With said intake valve; an oscillating pipe adapted toconvey steam to said intake valve connected to said throttle valve; andconnections between said pipe and said governor consisting of amutilated gear on said pipe, and a pair of racks controlled by saidgovernor by which said pipe is oscillated, substantially as described.

In testimony whereof, I afiixmy signature, in presence of two witnesses.

' IVARD RISLEY.

Vitnesses T. A. IVITHERSPOON, FRANK A. HARRISON.

